Crusher for stone and like materials



Nov. 2; 1937. w'. L. WETTLAUFER CRUSHER FOR STONE AND LIKE MATERIALS Filed Sept. 8, 19373 3 Sheets-Sheet l Elven/$07;

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NOV 2, 1937- w. l.. WETTLAUFER '2,097,906

CRUSHER FOR STONE AND LIKE MATERIALS Filed Sept. 8, 1933 3 Sheets-Sheet 2 Nov. 2, 1937. w. L. WETTLAUFER 2,097,906

CRUSHER FOR STONE AND LIK MATERIALS Filed Sept. 8, 1935 5 Sheets-Sheet 3 v Patented Nov. 2, 1937 UNITED STATES PATENT OFFICE William L. Wettlaufei', Buffalo, N. Y., assignor to The W. S'. Tyler Company, Cleveland, Ohio, a

corporation of Ohio Application September 8, 1933, Serial No. 688,598

3 Claims.

'I'his invention relates to a machine for crushing stone and other materials.

One of its objects is the provisiony of a simple, compact and rugged machine of this character which is designed to afford maximum capacity with a minimum expenditure of power.

Another object of the invention is to provide an effcient gyratory, high speed crushing apparatus Whose cooperating or companion crushing elements are so designed and constructed as to provide a maximum crushing surface or area in comparison to the length of the actuating shaft of the machine.

A further object is the provision of reliable and effective means for yieldingly suspending the gyrating crushing member or body against rotation and yet permit its proper gyrating action for crushing and prevent the choking or clogging of the machine.

In the accompanying drawings:-

Figure 1 is a perspective view of a crusher embodying my invention. Figure 2 is an enlarged vertical, longitudinal section thereof taken in the plane of line 2 2, Figure 1. Figure 3 is a horizontal section taken on line 3-3, Figure 2. Figure 4 is a detached perspective view of the gyrating crushing member or muller and the companion adjustable members or jaw-blocks. Figure 5 is a fragmentary sectional view of a modified construction of the adjustable, safetyrelease means for the jaw-blocks. Figure 6 is a similar View of another modification of the adjustable, safety-release` means for the jaw-blocks. Figure 7 is a face view of one of the jaw-blocks of the crusher. Figure 8 is a top p1an view thereof. Figure 9 is a cross section taken on line' 9 9, Figure 2.

Similar characters of reference indicate corresponding parts throughout the several views.

The supporting frame or base of the machine may be of any suitable construction, that shown in the drawings, by way of example, consisting of spaced side plates I0, I connected at their lower ends by transverse walls or tie members I I. Along their marginal top and bottom edges, these plates may be provided with outwardly-facing flanges I2.

The operating parts of my improved crusher are supported in this frame and are preferably constructed as follows:-

The numeral I3 indicates the operating or drive shaft of the machine which is driven in any approved manner and which extends transversely and horizontally through the frame plates I0 and is journaled in suitable bearings I4 secured thereto. Applied to this shaft is the movable element or muller of the crusher mechanism which is preferably in the form of a comparatively heavy gyrating body or member I of substantially circular or disk shape. The drive shaft I 3 extends through the gyrating crushing body at substantially its center of gravity and disposed between this shaft and said crushing body are connections for positively gyrating the latter in circular paths. This connection, as shown in the drawings, may be in the form of eccentrics I6 formed on the drive shaft and engaging roller or like bearings I1 fitted in the opposite sides of the gyrating body, so that during the rotation of the shaft, a circular or gyrating movement is imparted to such body I5. As shown in Figures 2 and'4, the opposite side or peripheral edges of this gyrating body are preferably arcuate or curvilinear in shape, while the top and bottom sides of the same are straight and comparatively flat. 'Ihese curved peripheral edges of the crushing body constitute crushing faces or surfaces and, by preference, are wedge-shaped or V- shaped in cross section as indicated at I8 to provide a plurality of crushing faces extending from the top to the bottom of said body.

Cooperating with and in juxtaposed relation to the wedge-shaped edges I 8 of the gyrating crushing body I5 are relatively fixed, adjustable crushing members which are preferably in the form of jaw-blocks I9 supported on the frame-plates I0 and located at opposite sides of the drive shaft I3 and in spaced relation to the V-shaped edges of the gyrating body to receive the stone or other material to be crushed therebetween. The inner or operating faces of these jaw-blocks are of a contour to form an operating chamber or crushing throat with each operating edge of the gyrating crushing body and, as seen in Figures 3 and 4, these blocks are provided with substantially V-shaped grooves 20 which mate with the companion V-shaped edges of said body I 5 in the manner shown in Figures 1, 2, and 3. At their upper or inlet ends these jaw-block grooves are flared outwardly, as seen in Figure '7, to present a comparatively wide opening or entrance for feeding the material to the respective crushing chamber, the material being delivered to the top side of the machine through a suitable hopper (not shown) and depositing itself ontol the top side of the crushing body I5, whose` gyrating motion acts to distribute the material to the inlet ends of said chambers. The side faces of the gyrating crushing body within the area defined .by its wedge-shaped crushing faces I8 are substantially ush with or abut against the opposing inner faces of the frame-plates Ill.4

In the preferred mounting of the jaw-blocks I9 they are constrained at their upper ends and adjustable at their lower ends for adjusting the size of the discharge openings of the crushing throats in accord with the sizing of the crushed stone desired. To this end, the upper ends of said blocks are pivoted or hinged for verticallyswinging movement toward and from the opposing faces I8 of the gyrating body I5 on transverse hinge pins 2| supported on the frameplates I0, while their lower ends are adjustably connected to the transverse frame-walls II through the medium of a safety-release mechanism of any suitable construction. In Figures 2 and 3, this mechanism consists of a tie or bridge plate 22 of cast iron or like fracturable material pivoted at one end to the corresponding jawblock and at its opposite end to a laterally-shiftable bar 23 with which a longitudinally-adjustable wedge-block 24 cooperates for urging the jaw-block inwardly or toward the working faces of the gyrating crushing body or muller. A sectional rod 25 including a coil spring 26 functions to urge the jaw-block in a direction away from the gyrating body. By this construction, the jaw-blocks may be readily adjusted relatively to the gyrating body I and should a non-crushable substance accidently enter the crusher, these blocks will be automatically released and merely break the renewable tie plates 22 without otherwise damaging the machine.

Other embodiments of the safety-release feature for the adjustable jaw-blocks are shown in Figures 5 and 6. In Figure 5, it consists of toggle links 21 pivoted at their outer ends to the framewall II and adjoining lower end of the jawbiock I9, their inner ends abutting against a cushion or coil spring 28 supported on such frame-wall. In Figure 6, the safety-release consists of abutting bars 29 pivoted at their outer ends to the jaw-block and frame-wall II respectively, their abutting inner ends being rounded to ride over each other should an emergency warrant it, and a spring 30 serving to resiliently retain them in abutting relation.

At its ends the driving shaft I3 is provided with counter-weighted y wheels 3| to properly balance the gyrating crushing body I5, and while it is necessary that this comparatively heavy crushing body be positively gyrated to effect the crushing of the material, it is essential to prevent any tendency of it to rotate with the shaft. To this end, the gyrating body is preferably yieldingly suspended from opposite sides of the machine-frame by spring or like resilient means which may consist of coil springs 32 disposed in opposing horizontal relation above and below the shaft I3 and adjacent the top and bottom sides of the gyrating body at either side of its gyrating axis, and coil springs `33 disposed vertically and substantially in the plane of such axis, as shown in Figure 1. Applied to the top and bottom sides of the crushing body I5 are transverse straps or plates 34 which project beyond the side faces of said body and which have on their projecting ends an upright ange 35 to which the opposing inner ends of the horizontal springs 32 are attached, the outer ends of such springs being secured to brackets 36 secured either to the side-plate flanges I2 or to the side plates directly. As seen in Figures 1 and 2, the lowervspring-attaching strap 34 projects at its ends through openings 3l in the side plates I 0. The upper set of vertical springs 33 are disposed between the ends of the upper bodystrap 34 and brackets 38 secured to the side plates I0, while the lower set ofvertical springs are disposed between the projected ends of the lower body-strap and the corresponding lower anges I2 of the frame-plates. By this construction, the springs 32, 33 not only yieldingly resist any tendency of the crushing body I5 tglrotate with the shaft I3 while still permitting its unrestrained, positive gyrating motion, but they serve as well as a resilient suspension for such body, the upright springs also functioning to relieve the load on the shaft-bearings I fl, I'I.

In operation, the material is delivered in a suitable manner onto the top side of the machine frame and distributed by the gyrating crushing body I5 into the ared upper ends of the crushing throats or chambers. Upon dropping into these chambers, the stone is impacted against and eifectually reduced between the crushing surfaces by the relative wedging action produced by the gyration of the body I5 into and out of the grooved jaw-blocks I9. The stone works its way down between these crushing surfaces and is continually acted upon until it reaches the lower or outlet ends of the chambers, where it is discharged in the size determined by the setting of the jaw-blocks. rating action of the crushing body I5 is augmented or intensified into a substantially fluttering movement by reason of the yieldable suspension of such body, which movement eilectually keeps the stone in motion and eliminates choking or clogging of the machine. 'I'he crushing surfaces of the crushing elements taper downwardly and toward each other to a point short of their lower ends, where such companion surfaces are parallel to each other to effect the proper sizing desired.

This machine is manifestly simple, compact and rugged in construction, reliable and ecient in operation, and has a maximum reduction ratio and a minimum percentage of oversize and waste fines or dust.

I claim as my invention:-

1. In a crusher, a movable crusher body provided with horizontally opposed crusher faces, normally stationary jaws supported in a frame `on opposite sides of said body and forming therewith two downwardly convergent throats, an eccentric shaft extending through said body at substantially its center of gravity for gyrating the same with respect to said jaws, and coil spring means above and below said crusher body and between it and said frame constantly urging said body to a neutral position between said jaws.

2. In a crusher, a movable crusher body provided .,with horizontally opposed V-shaped crusher faces, normally stationary jaws provided with V-shaped work faces supported in a frame on opposite sides of said body and forming therewith two downwardly convergent throats of angular cross-section, an eccentric shaft extending through said body at substantially its center of gravity for gyrating the same with respect to said jaws, and coil spring means above and below said crusher body and between it and said frame constantly urging said body to a neutral position between said jaws.

3. In a crusher, a movable crusher body provided with horizontally opposed crusher faces, normally stationary jaws provided with work faces and supported in a frame on opposite sides of said body and forming therewith two down- During this operation, the gyaboveandfbelow said crusherbody and` between s itandsaid frame constantly urging said body to wardly convergent throats, the-upper and Yloweij edges of the work faces of said jaws `respectively l lying below and above the` upper and "lower edges of the work faces of said body, an eccentric v shaft extending through said body at substanytially its center of gravity for gyrating the saine a `neutral vx'aos'iizion between said jaws.

-WILLIAM L. WETTLAUFER. 

